Volkswagen CEO joins Twitter, trolls Elon Musk in his first tweet

Volkswagen CEO Herbert Diess joined Twitter and in his first tweet took a jab at Tesla CEO Elon Musk. "I'm here to make an impact with Volkswagen, especially on political issues. And, of course, to get some of your market shares, Elon Musk," he tweeted. In September, Diess gave Musk a test drive of Volkswagen's ID.3 electric car in Berlin.